Grassland ecology monitoring sampling device

Abstract

The invention belongs to the technical field of monitoring and sampling devices, and particularly relates to a grassland ecology monitoring and sampling device which comprises a moving device, a supporting structure, a lifting device, a lifting platform, a driving motor, a sample tube and a cutting ring, the blades are arranged on the outer wall of the sample tube and are uniformly distributed in a spiral track, and the bottoms of the blades are in contact with the cutting ring; a storage groove is formed in the bottom of the blade; the driving motor drives the sample tube and the cutting ring to rotate, the lifting device drives the cutting ring in the rotating state to be inserted into soil through the lifting platform, the cutting ring rotates while descending, plant roots in the soil are cut off, the integrity of a soil sample notch is improved, the situation that sampling is blocked due to too many roots is avoided, and therefore the sampling efficiency is improved; the integrity of a soil sample notch is maintained, and the accuracy of plants and organisms in the obtained soil sample can be fully reflected, so that the sampling effect is improved, and the accuracy of grassland ecological monitoring is further improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of monitoring sampling devices, in particular to a grassland ecological monitoring sampling device. BACKGROUND

[0002] The grassland ecological monitoring sampling device is a core tool for researching ecological elements such as grassland vegetation, soil and microenvironment, and its design and application directly affect the accuracy and representativeness of monitoring data. When monitoring soil physical and chemical properties, soil is the basis of the grassland ecosystem, and the sampling device needs to accurately obtain soil samples at different depths. The sampling method of the soil sampling device, such as a soil drill, includes the following steps: cleaning the vegetation and litter on the surface of the sampling point, marking the sampling depth, holding the soil drill handle with both hands, aligning the drill bit vertically with the sampling point, rotating clockwise and forcing downward until the preset depth is reached, slowly pulling out the soil drill, and using a scraper to scrape the soil sample in the drill bit into a sample bag. A ring cutter includes the following steps: flattening the surface of the sampling point, removing stones, roots and other debris, placing the ring cutter blade end down at the sampling position, fixing it with a ring cutter support until the ring cutter is fully inserted into the soil, and then removing the ring cutter and soil.

[0003] However, in actual sampling, soil sampling usually needs to obtain at least two types of samples, including samples for soil chemical property analysis and samples for soil physical property analysis, which requires personnel to frequently switch sampling tools to obtain different samples, increasing the complexity of sampling operations and affecting sampling efficiency. Moreover, frequent switching of sampling tools requires more and wider sampling ranges or sampling points, which increases the damage and impact of sampling on the existing grassland ecology, intensifies the disturbance of the grassland ecosystem, and frequent sampling requires frequent cleaning of the sampling tool during movement. However, due to the inconvenience of carrying water resources, the sampling tool cannot be fully cleaned. SUMMARY

[0004] In order to make up for the shortcomings of the prior art and solve the above technical problems, the application provides a grassland ecological monitoring sampling device.

[0005] The technical scheme adopted by the application to solve the technical problems is as follows: the application provides a grassland ecological monitoring sampling device, which comprises a moving device, a supporting structure, a lifting device, a lifting platform, a driving motor, a sample tube and a ring cutter.

[0006] The leaf is arranged on the outer wall of the sample tube, and the leaf is uniformly distributed in a spiral track. The bottom of the leaf is in contact with the ring cutter. The bottom of the leaf is provided with a receiving groove, and the receiving groove is hinged with a receiving baffle through a torsional spring. A guide scraper is slidably connected in the receiving groove through a spring. One end of the guide scraper away from the bottom of the leaf is provided with a pull rope, and one end of the pull rope penetrates through the leaf and is fixed above the leaf.

[0007] The cleaning ring is rotationally connected to a cleaning frame arranged in the support structure, and the cleaning frame is located below the lifting platform, and the inner ring of the cleaning ring contacts the surface of the sample tube and the surface of the blade; the top of the sample tube is open, and a sampling ring is slidably connected in the sample tube, and the inner ring of the sampling ring is hingedly connected with a sampling rod through a torsional spring, the sampling rod is annularly distributed, and the inside of the sampling rod is provided with a sampling cloth, a first rope is arranged on the sampling rod, and the first rope is located at the position of the sampling rod away from the sampling ring.

[0008] Preferably, the top of the sampling ring is provided with a support, the first rope passes through the center of the support, the top of the support is provided with a fixing rod, the two ends of the fixing rod are fixedly installed on the top opening of the sample tube, the center of the support is slidably connected with a measuring rod through a spring, the bottom of the measuring rod is located between the bottom of the support and the sampling ring, the top of the measuring rod is located on the top of the fixing rod, and the first rope is annularly distributed around the measuring rod.

[0009] Preferably, the top of the sample tube is slidably connected with a sliding block, the two ends of the fixing rod are installed on the two sliding blocks respectively, and one of the sliding blocks is connected with the lifting platform.

[0010] Preferably, the fixing rod is rotationally connected with a winding rod, the first rope is wound on the winding rod, a winding motor is installed on the fixing rod and connected with one end of the winding rod; one side of the sampling rod is attached to the inner wall of the sample tube.

[0011] Preferably, the sampling cloth is uniformly provided with supporting strips inside, and the two ends of the supporting strips are connected to the two inner walls of the sampling rod.

[0012] Preferably, an annular groove is formed in the outer peripheral surface of the sampling ring, and a water-absorbing sponge is arranged in the annular groove, and the water-absorbing sponge is tightly attached to the inner wall of the sample tube.

[0013] Preferably, scraping rings are arranged at the top and the bottom of the sampling ring, and the scraping rings are made of rubber and tightly attached to the inner wall of the sample tube.

[0014] Preferably, supporting pieces are uniformly arranged on one side of the scraping ring, one end of each supporting piece is connected with the sampling ring, and the other end of each supporting piece is located in the scraping ring and close to the inner wall of the sample tube.

[0015] Preferably, scraping blocks are arranged on the side of the sliding block close to the inside of the sample tube, and the scraping blocks contact the outer peripheral surfaces of the sampling ring and the scraping ring.

[0016] Preferably, the bottom of the scraping block is slidably connected with a slag discharging plate through a spring, and the slag discharging plate is inclined away from the sample tube.

[0017] The beneficial effects of the present application are as follows:

[0018] 1. The grassland ecological monitoring sampling device, the sample tube and the cutting ring are rotated by the driving motor, the cutting ring in the rotating state is inserted into the soil by the lifting device through the lifting platform, the cutting ring rotates while descending, the plant root in the soil is cut off, the integrity of the soil sample incision is improved, the situation that the sampling is blocked due to too much root is avoided, and the sampling efficiency is improved; and the integrity of the soil sample incision is maintained, the accuracy of the plant and the organism in the obtained soil sample can be fully reflected, the root is not cut off in time, part of the root is pulled down by the cutter, the root is far away from the sample tube, the content of the plant root in the sample and the biomass of the organism living according to the root are reduced, the sampling effect is improved, and the accuracy of the grassland ecological monitoring is improved.

[0019] 2. The grassland ecological monitoring sampling device, the blade is inserted into the soil outside the sample tube and rotates with the sample tube, the soil around the outer wall of the sample tube is drilled out by the spiral blade, the soil sample in the sample tube and the soil sample drilled out of the sample tube are collected, a plurality of soil samples are obtained at one time, and the sampling efficiency is improved; and the soil around the outer wall of the sample tube is drilled out and loosened by the blade, the frictional force between the side wall and the soil during the descending process of the sample tube is reduced, that is, the loosened soil is more easily inserted into the sample, the sample tube is more easily inserted into the soil for sampling, and the sampling efficiency is improved; and the roots around the blade are cut off at the same time, the influence of the roots on the sample is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0020] The application will be further described below in combination with the drawings.

[0021] Figure 1 is a perspective view of the application;

[0022] Figure 2 is a sectional view when the sample tube is lifted;

[0023] Figure 3 is a partial enlarged view of the upper half of the Figure 2

[0024] Figure 4 is a partial enlarged view of the lower half of the Figure 2

[0025] Figure 5 is a state diagram when the guide spade is retracted;

[0026] Figure 6 is a perspective view of the sampling ring;

[0027] Figure 7 is a sectional view when the sampling ring passes through the scraping block. ​​

[0028] Figure: mobile device 1, support structure 11, lifting device 12, lifting platform 13, drive motor 14, sample tube 15, ring cutter 16, blade 17, storage groove 18, storage flap 19, guide spade 2, pull rope 21, cleaning ring 22, cleaning frame 23, sampling ring 24, sampling rod 25, sampling cloth 26, No. 27, bracket 28, fixed rod 29, measuring rod 3, measuring piece 31, sliding block 32, winding rod 33, winding motor 34, support strip 35, annular groove 36, water-absorbing sponge 37, scraping ring 38, support piece 39, scraping block 4, slag discharge plate 41. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings shown in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] Embodiment one:

[0031] In order to effectively solve the above problems, as shown in the drawings Figures 1-7 A grassland ecological monitoring sampling device, comprising a mobile device 1, a support structure 11, a lifting device 12, a lifting platform 13, a drive motor 14, a sample tube 15 and a ring cutter 16, the lifting platform 13 is slidingly connected in the support structure 11, the lifting platform 13 is connected with the conventional lifting device 12 and the lifting device 12 is fixed in the support structure 11, the ring cutter 16 is installed at the bottom of the sample tube 15, the sample tube 15 is rotatingly connected to the lifting platform 13 in a vertical state and the sample tube 15 is connected with the drive motor 14; the lifting device 12 drives the sample tube 15 and other parts to slide up and down through the lifting platform 13, and the motor drives the sample tube 15 to rotate in the lifting platform 13 through the conventional transmission mode while the lifting platform 13 is lifted;

[0032] Further comprising:

[0033] Blade 17, the blade 17 is arranged on the outer wall of the sample tube 15, and the blade 17 is uniformly distributed in a spiral track, and the bottom of the blade 17 contacts the ring cutter 16; the bottom of the blade 17 is provided with a storage groove 18, the bottom of the storage groove 18 is hinged with a storage flap 19 through a torsional spring, and a guide spade 2 is slidingly connected in the storage groove 18 through a spring, one end of the guide spade 2 away from the bottom of the blade 17 is provided with a pull rope 21, one end of the pull rope 21 penetrates through the blade 17 and is fixed above the blade 17;

[0034] The cleaning ring 22 is rotationally connected in the cleaning frame 23 arranged in the support structure 11, and the cleaning frame 23 is located below the lifting platform 13, and the inner circle of the cleaning ring 22 contacts the surface of the sample tube 15 and the surface of the blade 17; the top of the sample tube 15 is open, and the sample tube 15 is slidably connected with the sampling ring 24, and the inner circle of the sampling ring 24 is hingedly connected with the sampling rod 25 through the torsion spring, the sampling rod 25 is annularly distributed and the inside of the sampling rod 25 is provided with the sampling cloth 26, and the sampling rod 25 is provided with the first rope 27, and the first rope 27 is located at the tip of the sampling rod 25 away from the sampling ring 24;

[0035] The moving device 1 is a moving trolley arranged in a conventional sampling device, used for moving and carrying a sampling part box tool; the sampling rod 25 is a bent rod, one sampling rod 25 and the sampling cloth 26 form a sector, the two ends of the sampling rod 25 are hingedly connected to the inner wall of the sampling ring 24 through the torsion spring, and the middle part of the sampling rod 25 is close to the center of the sampling ring 24 and is in an acute angle bent shape; the plurality of sector-shaped sampling rods 25 and the sampling cloth 26 form a plane, which plays a role of intercepting and lifting the soil in the sampling ring 24;

[0036] Specific working process: when two kinds of soil samples of chemical monitoring and physical monitoring are needed, the personnel moves the sampling device to the sampling point through the moving device 1, fixes the sampling device on the grassland, and then starts sampling after processing the sampling point, drives the sample tube 15 and the cutting ring 16 to rotate through the driving motor 14, drives the cutting ring 16 in the rotating state to insert into the soil through the lifting device 12 and the lifting platform 13, and the cutting ring 16 rotates while descending, cuts off the plant roots in the soil, improves the integrity of the soil sample incision, avoids the situation that too much roots cause sampling obstruction and the like, and improves the sampling efficiency; and, maintaining the integrity of the soil sample incision can fully reflect the accuracy of the plants and organisms in the obtained soil sample, avoids that the roots are not cut off in time, causes the roots to be pulled and stretched by the cutting knife, causes the roots to be far away from the sample tube 15, reduces the content of the plant roots in the sample and the biomass of the organisms living on the roots, improves the sampling effect, and further improves the accuracy of the grassland ecological monitoring;

[0037] If the ring cutter 16 encounters hard objects such as stones during the descent process, the descent of the ring cutter 16 is blocked, the personnel loosen the pull rope 21, the pull rope 21 no longer plays a pulling role on the guide digging plate 2, the guide digging plate 2 is affected by the contraction state spring and extends from the storage slot 18 and moves to the lower side of the ring cutter 16, at this time, the personnel can also lift the sample tube 15 by one end distance without avoiding the extension of the guide digging plate 2 blocked by the stones, there is no material under the sample tube 15 to block the extension of the guide digging plate 2, which helps the guide digging plate 2 to extend more smoothly to the lower side of the ring cutter 16; then, the fixed pull rope 21, the guide digging plate 2 is fixed in the extended state at this time, the sample tube 15 drives the guide digging plate 2 to rotate through the blade 17, the bottom of the guide digging plate 2 is inclined, the bottom of the guide digging plate 2 is inserted into the lower side of the inner ring of the ring cutter 16, and the guide digging plate 2 descends while rotating, for example, the phenomenon of soil drilling by the soil drill, guiding the soil and stones under the ring cutter 16 to contact the blade 17, and drilling the soil and stones away from the ring cutter 16 with the rotation and descent of the blade 17, removing the blocking objects of the ring cutter 16, which helps the smooth progress of the sampling work, avoids tedious operations such as changing the sampling point, and thus improves the sampling efficiency;

[0038] After the use of the guide digging plate 2, the guide digging plate 2 is moved to retract into the storage slot 18 by lifting the pull rope 21, so as to avoid the influence of the guide digging plate 2 on the subsequent sampling work; during the retraction of the guide digging plate 2, the storage baffle 19 is affected by the torsion spring and keeps in contact with the surface of the guide digging plate 2, the guide digging plate 2 retracts and the storage baffle 19 scrapes the soil adhered to the surface, thus cleaning the guide digging plate 2, shortening the cleaning time of the sampling tool, improving the cleaning efficiency after each sampling, and shortening the cleaning time; and the guide digging plate 2 is automatically cleaned after each use, the contact time of the soil and the guide digging plate 2 is shortened, and the deep soil with high water content is avoided to adhere to the surface of the guide digging plate 2;

[0039] Further, when the sample tube 15 is inserted into the soil, the blade 17 is inserted into the soil outside the sample tube 15 and rotates with the sample tube 15, the helical blade 17 drills the soil around the outer wall of the sample tube 15, and the personnel collects it, and then the soil sample in the sample tube 15 and the soil sample drilled outside the sample tube 15 are obtained, achieving the purpose of obtaining multiple soil samples at one time, and thus improving the sampling efficiency; and the soil around the outer wall of the sample tube 15 is drilled and loosened by the blade 17, which can reduce the frictional force between the side wall and the soil during the descent of the sample tube 15, that is, the loosened soil is easier to insert and sample, which is more helpful for the insertion of the sample tube 15 into the soil for sampling and improves the sampling efficiency; and at the same time of loosening the soil, the roots around are cut off by the blade 17, which cooperates with the cutting effect of the cutter to avoid the influence of the roots on the sample;

[0040] When the sample tube 15 is lowered to the sampling depth, the staff raises the first rope 27, which pulls the sampling rod 25 away from one end of the sampling ring 24, and the sampling rod 25 swings around the hinge point on the sampling ring 24 from a vertical state to a horizontal state, achieving the effect of closing the bottom of the sample tube 15, and the soil sample is stored in the sampling ring 24. After the staff raises the sample tube 15, the sampling ring 24 is pulled out of the sample tube 15, and the sample can be obtained, which facilitates the removal of the soil inside the sample tube 15 and avoids the soil adhering to the inner wall of the sample tube 15 due to humidity, causing difficulty in removal. When the sampling ring 24 is pulled out, the sampling ring 24 scrapes the inner wall of the sample tube 15, completing a cleaning of the inner wall of the sample tube 15, which facilitates the cleaning of the sampling tool and improves the sampling efficiency, and also enables the sampling tool to be fully cleaned in the case where water is not available.

[0041] During the lifting of the sample tube 15, the cleaning ring 22 is rotationally connected to the cleaning frame 23 provided in the support structure 11, and the cleaning frame 23 is fixed, so the sample tube 15 remains fixed and does not rotate during lifting. The cleaning ring 22 is affected by the inclined guide of the blade 17 and begins to rotate and scrape the outer wall of the sample tube 15 and the surface of the blade 17, which cooperates with the effect of the sampling ring 24 cleaning the inner wall of the sample tube 15 and the effect of the storage baffle 19 cleaning the guide digging plate 2 to fully clean the sampling tool under waterless conditions and complete automatic cleaning, thereby improving the convenience of use. In this process, no additional power device needs to be installed, which saves electricity and prolongs the use time of the sampling device, thereby improving the practicality.

[0042] When two kinds of samples are not needed, the staff can choose the sampling method as needed, such as lifting only the sample tube 15, inserting the sample tube 15 into the soil for sampling, or inserting the sampling rod 25 in a horizontal state into the soil for sampling through the blade 17, thereby improving the convenience of use of the sampling device.

[0043] Embodiment Two:

[0044] On the basis of embodiment one, the sampling ring 24 is provided with a support 28, and the first rope 27 passes through the center of the support 28. The support 28 is provided with a fixed rod 29 at the top, and the two ends of the fixed rod 29 are fixedly installed on the top opening of the sample tube 15. The center of the support 28 is slidably connected with a measuring rod 3 by a spring, the bottom of the measuring rod 3 is located between the bottom of the support 28 and the sampling ring 24, the top of the measuring rod 3 is located at the top of the fixed rod 29, and the first rope 27 is annularly distributed around the measuring rod 3.

[0045] The top of the sample tube 15 is slidably connected with a sliding block 32, and the two ends of the fixed rod 29 are installed on the two sliding blocks 32, respectively, and one of the sliding blocks 32 is connected with the lifting platform 13.

[0046] The fixed rod 29 is rotationally connected with a winding rod 33, and the first rope 27 is wound on the winding rod 33. The fixed rod 29 is provided with a winding motor 34 connected with one end of the winding rod 33. The sampling rod 25 is attached to the inner wall of the sample tube 15.

[0047] The sampling cloth 26 is provided with support strips 35 evenly arranged on the sampling cloth 26, and the two ends of the support strips 35 are connected to the inner walls of the two sides of the sampling rod 25.

[0048] Specific working process: when sampling, there are stones, gravel, plant residues, etc. in the grassland soil, and the distribution of soil particles is not uniform. The distribution of soil nutrients is affected by plant litter decomposition and root exudates, and the distribution of nutrients is uneven. If only one sample is taken by the sample tube 15, it is likely that the high nutrient patch is taken or the root dense area is avoided, resulting in data that cannot represent the average level of the whole sample point. Therefore, the sample ring 24 can be inserted and taken out at any time in the sample tube 15, so that the soil sample in the sample tube 15 can be divided into separate small samples and sampled multiple times.

[0049] When taking a small soil sample, the personnel pull the sampling rod 25 to become horizontal state through the first rope 27, the bottom of the sampling ring 24 is closed, the personnel contact the fixed connection of the fixed rod 29 and the sliding block 32, lift the fixed rod 29, the fixed rod 29 drives the sampling ring 24 to rise away from the sample tube 15 through the support 28, and then collect the soil in the sampling ring 24. Then, clean the sampling ring 24 or insert a new sampling ring 24 into the sample tube 15, lower the sampling ring 24 to the position of the cutting ring 16, and then the fixed rod 29 contacts the sliding block 32. The personnel fix the fixed rod 29 on the sliding block 32 again, and the sample tube 15 is lowered for sampling. The soil contacts the weight piece 31 in the sampling ring 24 after passing through the sampling rod 25 and the sampling cloth 26 in the vertical state. With the lowering, the soil sample increases, the weight piece 31 is extruded to rise, the weight piece 31 drives the weight rod 3 to rise, and the personnel determine the amount of the sample obtained by the distance between the top of the weight rod 3 and the fixed rod 29. When the amount is reached, the above operation can be repeated to take out the small soil sample.

[0050] The process of multiple sampling is to offset local heterogeneity by repeated sampling and mixing homogenization. For example, in the range of a sampling point, the sample tube 15 is repeatedly inserted into the soil 3-5 times in a random distribution. The first time is inserted into the upper left corner of the unit to take out the shallow soil, the second time is inserted into the center of the unit to take out the middle layer soil, and the third time is inserted into the lower right corner of the unit to take out the deep layer soil. The samples of the three times are different points and different depths, which improves the diversification of sampling and improves the sampling effect.

[0051] And personnel can also mix soil samples, by repeating sampling with homogenization process, mixed into the whole, offset local micro-environmental chance differences, make the sample closer to the average level of the target area, further improve the sampling effect, improve the accuracy and reliability of soil physical and chemical properties, underground biomass monitoring data;

[0052] Further, at each sampling, the remaining soil is mixed with other soil and buried back into the sample tube 15. After the sample tube 15 is extracted, the sampling point will not have a hole caused by sampling. The grassland soil structure of the sampling point is maintained by filling back and burying, reducing the damage to the soil layer. Moreover, the sampling ring 24 repeatedly scrapes the inner wall of the sample tube 15, keeping the inner wall of the sample tube 15 clean and reducing pollution while facilitating cleaning.

[0053] Since the slider 32 is connected to the lifting platform 13, when the sample tube 15 rotates, the slider 32 drives the fixed rod 29 to remain fixed and not rotate. The fixed rod 29 drives the sampling ring 24 and the sampling rod 25 to remain fixed and not rotate through the support 28. The sampling rod 25 in the vertical state scrapes the inner wall of the ring knife 16 on one side, and the sampling rod 25 cleans the inner wall of the ring knife 16 in cooperation with the cleaning ring 22, which further improves the cleanliness of the ring knife 16 and avoids the increase in soil adhering to the ring knife 16 affecting sampling, such as soil adhering to the spade when inserting soil.

[0054] By setting the winding rod 33, when the sampling ring 24 is extracted, the winding motor 34 drives the winding rod 33 to rotate and wind the No. 1 rope 27, so that the sampling rod 25 at the bottom of the sampling ring 24 remains synchronous swing. This avoids the situation where soil samples leak out from the gap between adjacent sampling rods 25 during the process of the sampling rod 25 swinging to the horizontal, resulting in a decrease in sample quantity. Thus, the same sampling quantity is maintained, and the sampling effect is improved.

[0055] By setting the support strip 35, the soil weight above the sampling rod 25 is pressed on the sampling cloth 26 during the process of the sampling rod 25 swinging to the horizontal. The support strip 35 connected to the sampling rod 25 at both ends provides support for the sampling cloth 26, avoiding the situation where the damaged sampling cloth 26 is squeezed to tear, causing the sample to leak out. Thus, the same sampling quantity is maintained.

[0056] Embodiment Three:

[0057] On the basis of embodiment two, the outer peripheral surface of the sampling ring 24 is provided with an annular groove 36, and the annular groove 36 is provided with a water-absorbing sponge 37, which is tightly attached to the inner wall of the sample tube 15. The water-absorbing sponge 37 is provided with a drying agent, such as silica gel drying agent or lime drying agent.

[0058] The top and bottom of the sampling ring 24 are provided with scraping rings 38, and the scraping rings 38 are made of rubber and tightly contact the inner wall of the sample tube 15;

[0059] The scraping rings 38 are uniformly provided with support pieces 39 on one side, and one end of the support pieces 39 is connected with the sampling ring 24, and the other end is located in the scraping ring 38 and close to the inner wall of the sample tube 15;

[0060] Specific working process: The moisture in the soil will wet the inner wall of the sample tube 15, and the soil will increase in viscosity after contacting the wet inner wall of the sample tube 15, which will increase the resistance of the sampling ring 24 to be taken out and also easily cause the soil to form soil clumps in the sample tube 15, increasing the cleaning burden of the inner wall of the sample tube 15; therefore, when the sampling ring 24 passes through the inner wall of the sample tube 15, the annular groove 36 drives the water-absorbing sponge 37 to wipe through the inner wall of the sample tube 15, adsorb the moisture on the inner wall of the sample tube 15, dry the inner wall of the sample tube 15, reduce the resistance of the sampling ring 24 to be taken out, and improve the cleaning effect of the sample tube 15, so as to maintain the cleanliness of the sample tube 15;

[0061] By setting the scraping ring 38, when the sampling ring 24 passes through the inner wall of the sample tube 15, the scraping ring 38 is on the top and bottom of the sampling ring 24, which on the one hand plays a sealing role for the contact gap between the sampling ring 24 and the inner wall of the sample tube 15, prevents the soil and moisture from entering, and avoids the influence of the soil on the lifting action of the sampling ring 24; on the other hand, the scraping ring 38 scrapes the inner wall of the sample tube 15 through flexible contact, which cleans the inner wall of the sample tube 15 while reducing the damage caused by frequent friction;

[0062] By setting the support piece 39, and the support piece 39 is located in the scraping ring 38, the support piece 39 provides support for the scraping ring 38, avoids the deformation of the scraping ring 38, and prevents the sand in the soil from entering between the scraping ring 38 and the inner wall of the sample tube 15, causing excessive friction damage; and one end of the support piece 39 is located in the scraping ring 38 and close to the inner wall of the sample tube 15, which improves the ability of the scraping ring 38 to remove soil clumps and reduces the influence of the residual clumps on the quality of subsequent sampling.

[0063] Example Four:

[0064] On the basis of example three, the scraping block 4 is provided on the side close to the inside of the sample tube 15, and the scraping block 4 contacts the outer peripheral surface of the sampling ring 24 and the scraping ring 38;

[0065] The bottom of the scraping block 4 is slidingly connected with a slag discharge plate 41 through a spring, and the slag discharge plate 41 is inclined away from the sample tube 15;

[0066] Specific workflow: when the sampling ring 24 rises and separates from the sample tube 15, the sampling ring 24 is in contact with the side wall of the sliding block 32, and the sliding block 32 on the sample tube 15 is fixed on the support structure 11, so that the sampling ring 24 can be actively rotated when contacting the sliding block 32, so that the scraping block 4 can clean the outer peripheral surface of the sampling ring 24, the surface of the scraping ring 38 and the annular groove 36, clean the sampling parts and improve the sampling efficiency; and the impurities scraped off by the scraping block 4 fall on the slag discharge plate 41, and these impurities are guided along the inclined surface of the slag discharge plate 41 to the outside of the sample tube 15, reducing the situation that the impurities contact the inner wall of the sample tube 15; moreover, personnel can also use the spring sliding of the slag discharge plate 41 to generate a pressing force, insert one end of the slag discharge plate 41 into the annular groove 36, and the drying agent in the water absorption sponge 37 will harden after absorbing moisture, which will block part of the effective drying agent in the water absorption sponge 37, reducing the water absorption and drying effect; the slag discharge plate 41 extrudes the water absorption sponge 37, so that the hardened drying agent or moisture in the water absorption sponge 37 is crushed and extruded, which is conducive to maintaining the drying effect of the water absorption sponge 37 on the inner wall of the sample tube 15, thereby avoiding the increase of soil viscosity due to soil moisture, and facilitating the personnel to monitor the grassland ecological sampling; after cleaning the water absorption sponge 37, the slag discharge plate 41 contacts the inner wall edge of the annular groove 36, and is retracted into the scraping block 4 by extrusion, facilitating the sampling ring 24 to pass through.

[0067] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A grassland ecological monitoring sampling device, comprising a mobile device (1), a support structure (11), a lifting device (12), a lifting platform (13), a driving motor (14), a sample tube (15) and a ring knife (16); characterized in that, Also include: Blade (17), the blade (17) is provided on the outer wall of the sample tube (15), and the blade (17) is uniformly distributed in a spiral track, and the bottom of the blade (17) contacts the ring knife (16); The bottom of the blade (17) is provided with a receiving groove (18), the bottom of the receiving groove (18) is hinged with a receiving baffle (19) through a torsion spring, and a guide spade (2) is slidably connected in the receiving groove (18), one end of the guide spade (2) away from the bottom of the blade (17) is provided with a pull rope (21), and one end of the pull rope (21) penetrates through the blade (17) and is fixed above the blade (17). The cleaning ring (22) is rotatably connected in the cleaning frame (23) provided in the support structure (11), and the cleaning frame (23) is located below the lifting platform (13), and the inner circle of the cleaning ring (22) contacts the surface of the sample tube (15) and the surface of the blade (17); The top of the sample tube (15) is open, and the sample tube (15) is slidably connected with a sampling ring (24), and the inner circle of the sampling ring (24) is hinged with a sampling rod (25) through a torsion spring, the sampling rod (25) is annularly distributed and provided with a sampling cloth (26) inside, and a first rope (27) is arranged on the sampling rod (25), and the first rope (27) is located at the position of the sampling rod (25) away from the sampling ring (24).

2. A device for monitoring and sampling grassland ecology according to claim 1, characterized in that: The top of the sampling ring (24) is provided with a support (28), and the first rope (27) passes through the center of the support (28), the top of the support (28) is provided with a fixed rod (29), and the two ends of the fixed rod (29) are fixedly installed on the top opening of the sample tube (15), the center of the support (28) is slidably connected with a measuring rod (3) through a spring, the bottom of the measuring rod (3) is located between the bottom of the support (28) and the sampling ring (24), the top of the measuring rod (3) is located on the top of the fixed rod (29), and the first rope (27) is annularly distributed around the measuring rod (3); The bottom of the measuring rod (3) is provided with a scale piece (31), and the outer peripheral edge of the scale piece (31) contacts the sampling ring (24).

3. A device for monitoring and sampling grassland ecology according to claim 2, characterised in that: The top of the sample tube (15) is slidably connected with a sliding block (32), the two ends of the fixed rod (29) are respectively installed on the two sliding blocks (32), and one of the sliding blocks (32) is connected with the lifting platform (13).

4. A device for monitoring and sampling grassland ecology according to claim 3, characterised in that: The fixed rod (29) is rotatably connected with a winding rod (33), and the first rope (27) is wound on the winding rod (33), and the fixed rod (29) is provided with a winding motor (34) connected with one end of the winding rod (33); One side of the sampling rod (25) abuts against the inner wall of the sample tube (15).

5. A device for monitoring and sampling grassland ecology according to claim 4, characterised in that: The sampling cloth (26) is uniformly provided with a support strip (35) inside, and the two ends of the support strip (35) are connected to the inner walls on both sides of the sampling rod (25).

6. A device for monitoring and sampling grassland ecology according to claim 2, characterized in that: The outer peripheral surface of the sampling ring (24) is provided with an annular groove (36), and the annular groove (36) is provided with a water-absorbing sponge (37), and the water-absorbing sponge (37) is tightly attached to the inner wall of the sample tube (15).

7. A device for monitoring and sampling grassland ecology according to claim 6, characterised in that: The top and bottom of the sampling ring (24) are provided with scraping rings (38), and the scraping rings (38) are made of rubber material, and the scraping rings (38) are tightly attached to the inner wall of the sample tube (15).

8. A device for monitoring and sampling grassland ecology according to claim 7, characterised in that: The scraping ring (38) is uniformly provided with a support piece (39) on one side, and one end of the support piece (39) is connected with the sampling ring (24), and the other end is located in the scraping ring (38) and close to the inner wall of the sample tube (15).

9. A device for monitoring and sampling grassland ecology according to claim 8, characterised in that: The scraping block (4) is provided with a slag discharging plate (41) connected through a spring sliding at the bottom, and the slag discharging plate (41) is inclined away from the sample tube (15).

10. A device for monitoring and sampling grassland ecology according to claim 9, characterised in that: The scraping block (4) is provided with a slag discharging plate (41) connected through a spring sliding at the bottom, and the slag discharging plate (41) is inclined away from the sample tube (15).

Images